Bobbin stripper



Aug. 31, 1937. w. LONZO 2,091,866

BOBBIN STRIPPER Filed Aug. 28, 1935 4 Sheets-Sheet 1 Aug. 31, 1937. w. LONZO 2,091,866

- BOBBIN STRIPPER Filed Aug. 28, 1935 4 Sheets-Sheet 2 upma- Aug. 31, 1937.

w. LONZO BOBBIN STRIPPER I Filed Aug. 28. 1935 4 Sheets-Shed 4 227/ 76am 0273a 1: um-

Patented Aug. 31, 1937 BOBBIN STRIPPER William Lonzo, Fitchburg, Mass, assignor of onethird to J. Newbern Rice, Fitchburg, Mass.

Application August 28, 1935, Serial No. 38,253

11 Claims.

The principal objects of this invention are to provide a simple and inexpensive machine for stripping bobbins of the weft ends wound thereon when they are ejected from a weft replenishing loom; to provide a machine of this character which can be run by one man; to provide a construction in which the bobbins. are dumped indiscriminately into compartments or boxes, thus saving the time required for placing them in definite position; to provide in connection therewith a rotating stripper roll to which the yarn from several bobbins at a time can be attached; to provide in cooperation therewith a shaker which vibrates the yarn coming from the bobbins to tend to dislodge those bobbins which rise from the box on account of the several turns of yarn adheringto them; to provide simple means for operating the rotating means and connections therefrom for operating the shakers; to provide the rotary stripper with elements that can be withdrawn lengthwise to allow the yarn to collapse and make it easy to remove it from the same; to provide protectors for the yarn between which the yarn from the several bobbins passes for preventing the bobbins being drawn up toward the stripper beyond these protectors, and to provide improved connections for the bearings of the stripper to facilitate swinging it in at one end to bring it into an inclined position for stripping.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which 3 Fig. l is a side View of a complete stripping machine constituting a preferred embodiment of.

50 f Fig. 8 is a. sectional View on the line 8-8 of Fig. '7;

Fig. 9 is a sectional view on the line 9-9 of Fig.7; Y Fig. 10. is a sectional view on the line l0i0 55 of Fig. 7,-and

Fig. 11 is a plan similar to Fig. 6 showing a modification.

The invention is shown as comprising a frame It supplied witha series of boxes or compartments H. These boxes are shown as arranged 5 in two series of three each and as mounted on angle irons constituting part of the frame pro- Vided with cross bars l2 and having pivoted buttons 13 on each end for engaging the doors of the boxes of the two series and holding them in "10 place. Each box is provided with a guide l4 for guiding the bobbins into the outer part of the box. These boxes are designed for receiving the bobbins in a confused mass dumped in indiscriminately, thus requiring no attention These 15 bobbins, of course, are discharged from a weft replenishing loom and each one has a thread wound on it at the butt end, which threads are to be removed by this machine.

Supported above the boxes H at the center is a single box IE carried by the frame in any desired way. This box extends along the machine over the boxes at the center. This box is for the purpose of receiving bobbins having an excessive quantity of yarn on them, the idea beingthat the operator will throw such bobbins into this box either before the mass of bobbins is thrown in the boxes |I, or afterwards, if he sees such bobbins therein.

The machine is operated by a motor 20 which through a suitable series of pulleys or other power transmitting devices transmits power to a shaft 2 I, through a pulley l8, and to a shaft 22, through a pulley l9. On the shaft 22 is fixed a. plate 24 at one end and a loosely mounted plate 23 near the other end. Cross pieces 25 and 26 are mounted on these plates, the piece 26 being thicker than the piece 25. A stripper bar 21 extends along the shaft from the piece 26 to the piece 25 and it is-tapered laterally. At one end the stripper bar has a strap 28 which extends around the end of the bar 21 and is. secured to the piece '26. The bar 21 is provided, in the form shown, with a pair of kerfs extending longitudinally and converging toward the small end in which are,? mounted slides 29. At the end of the strap 28 is a disc ll. Around the whole body of the stripper is placed a removable conical cloth cover I 29 preferably having a rough surface.

It will be seen that this whole stripper is tapered and mounted eccentrically on the shaft 22. When this shaft turns the loose ends from several bobbins are brought up into engagement with the stripper, as will appearand wound around the same by its rotation. The eccentricity of the stripper results in the intermittent pulling up of those bobbins from which the filling is being unwound, thus loosening up the mass of bobbins from the bottom of the box. This also frees the bobbins being unwound from the stagnant ones and assists in the unwinding operation. Secured to the strip-per bar 21 are shown a series of pins 38 extending substantially in a radial direction. When the machine is started the operator takes the loose ends from several bobbins and quickly wraps them around one of these pins which will enable the machine to strip the yarn from the bobbin very quickly.

Another feature of the invention is the use of protectors 3| of sheet metal or wire arranged along stationary cross bars 32 with which the machine is provided. These protectors are located on both sides. As shown in most of the figures these protectors are formed of sheet metal pieces each having its ends secured together at 33 and one end extending therefrom along the cross bars 32 for a distance parallel with them and spaced from them. Then they are bent outwardly and bent around to form a V-shape.

It will be seen that yarn coming into the spaces between two of these protectors can move along under the first named end of the protector to any position in which they may come and therefore the ends of the yarn are free to move into the natural position assumed when they are being wound up on the stripper. The main purpose of these protectors is to prevent the bobbins being pulled up against the stripper and thus blocking the operation of the machine.

On the shaft 2| are located cams 35 at each end. These cams operate shaker levers 36 pivoted at 31 and having on the short arms longitudinal shaker bars 38. The shaker levers normally are held against the cam by springs 39. As will be observed these shaker bars will operate as the shaft 2| turns to move the yarn up and down as it is running toward the stripper, thus agitating it and tending to prevent the bobbins from rising with the yarn being unwound from them. Two of these levers are shown at each end of the machine and the end levers operate two shaker bars extending throughout the machine.

Theshaft 22 is not located in bearings fixed rigidly on the frame l0 but its bearing 40 at one end rests on the frame and is capable of moving. It is provided with perforations 4| in which there are pins 42 projecting vertically upward having springs 43 for holding the bearing down yieldingly. After all the yarn has been wound on the stripper, the opposite end of the shaft 22 is released from a bearing 44 which is provided with a pivoted lever 45 and a. thumb nut release and is swung upwardly, as shown in dotted lines in Fig. '7. Now the two slides 29 are drawn out, as indicated by the dotted arrow in Fig. '7. This leaves the cloth cover slack and it can be drawn off as a whole, thus stripping all yarn from the stripper bar at one stroke and leaving the stripper so that it can be put back into proper position to perform this function again. This provides one of the important features of this invention because when a large number of ends of yarn have been wound on a stripping bar before it was a difficult thing to: remove the yarn from the stripper itself even if made tapering. By providing acollapsible stripper this is accomplished readily.

When stripping the cloth and yarn from the stripper bar the pins 30 are first removed. A metal strip 4'! of curved formation is placed in brackets 48 and rests on a support 49. The cloth tube is passed over it so that it will be left on this strip and can be removed by removing the strip 41. It is cleaned of the yarn afterwards and then can be used over again.

In the form shown in Fig. 11 a different kind of protector is provided in the form of a comb 16 which comprises parallel teeth between which the different ends of yarn are lead to the stripper bar. It positively prevents the bobbins from passing by them into contact with the rotary stripper bar.

This machine can be operated by one attendant. It consists of few parts readily replaceable and easily repaired. It is inexpensive to manufacture and repair and extremely easy to operate. The stripping of the yarn from the stripping bar is accomplished by a single motion and every particle of yarn is always stripped from the bar by removing the cloth cover. Ample provisions are made for preventing the bobbins coming into contact with the stripper bar.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. A rotary bobbin stripper comprising a rotary shaft and an eccentrically arranged stripper bar thereon of a rectangular shape in cross section tapered from one end to the other for varying the pull on the filling on the bobbins.

2. A bobbin stripper comprising a rotary shaft and a stripper bar located entirely on one side of the shaft for varying the pull on the filling on the bobbins.

3. A bobbin stripper comprising a rotary shaft,

a stripper bar thereon, a textile covering on said 3 bar, and a longitudinallyremovable slide on the bar adapted to be withdrawn to facilitate the stripping of the yarn from the stripper bar.

4. A bobbin stripper comprising a rotary shaft, a stripper bar thereon, a covering on the bar, a pair of slides on the bar removable longitudinally and converging toward one end, and means for rotating the shaft.

5. A bobbin stripper comprising a rotary shaft, an eccentrically arranged stripper bar thereon, a removable covering thereon and a pair of longitudinally removable slides on the bar adapted to be withdrawn to facilitate the stripping of the yarn from the stripper bar.

6. A bobbin stripper comprising a rotary shaft, a stripper bar thereon, a pair of slides on the bar removable longitudinally, and a tubular cover of flexible material of a general conical shape around the bar and slides.

7. In a bobbin stripper, the combination of a rotatable stripper, means for rotating the stripper, a shaker in position to engage the yarn just before it reaches the stripper, a shaft and means on the shaft for vibrating the shaker, for the purpose described.

8. In a bobbin stripper, the combination of a rotary stripper, means for rotating the stripper, a shaft, means for rotating the shaft from the stripper rotating means, a cam on the shaft, a lever, a spring for holding one arm of the lever in contact with the cam, and a shaker carried by the lever in position to engage the yarn at "70 the side of the stripper for the purpose of vibrating the yarn and dislodging any bobbin that tends to rise with the yarn.

9. In a bobbin stripper, the combination of a rotary stripper bar and a series of protectors over which the yarn passes to the stripper bar,

said protectors each comprising a part projecting away from the stripper bar, said bar having a space for receiving the yarn and guiding it.

10. In a bobbin stripper, the combination of a rotary stripper bar and a series of horizontal protectors on each side of the bar, over which the yarn passes to the stripper bar, said protectors each comprising a V-shaped part projecting away from the stripper bar, and having a space back of said bar for receiving the yarn and guiding it, said protectors beingspaced apart.

11. In a bobbin stripper, the combination of a rotary stripper bar having a tapered tube of cloth wound therearound to receive the ends of the yarn from the bobbins, and a detachable strip located at the discharge end of the stripper bar for receiving said tube of cloth when it is removed from the stripper bar, said strip having an end adjacent to the discharge end of the stripper bar and projecting outwardly therefrom.

WILLIAM LONZO. 

